Perhaps instead of giving an example just recommend typing Help. the default help topic is about using the help system.

I agree that we can simply say:

Type `help` to get help.

As much as I hate to add another new line, I very much would like to have URLs on their own line. That makes them easier to grab and for limited width consoles it reduces the risk of it being line wrapped.

For PowerShell Help online, visit:
https://aka.ms/pscore6-docs

I would prefer this link to be in the help text since the link isn't clickable

Previously we already added Online Help link in pwsh command line help - the idea was that today we always is in Web and Azure. The link can be easily copy-pasted.
What about:

Type 'Help' to get help.
Type 'Start-Process https://aka.ms/pscore6-docs' to get Online Help. 

Start-Process makes no sense on linux with a URL.
The link is clickable in KiTTY, so that kind of depends on the console app.
I see benefit in the link being displayed in the banner, but only if the URL is on a line by itself. Though, having it in the default help topic is a good alternative. As a user, I am not a fan of apps with long wordy banners.

I don't like long banners too but the idea is to follow Bash-style and to be web/Azure-friendly.
I expect Start-Process works on Linux by mean of XDS. I don't know about MacOs.

I expect Start-Process works on Linux

Assuming you are in a Linux GUI, maybe. it most certainly doesn't work in any of the ~20 Linux VMs I have pwsh installed on. It definitely wont work raspberry pi. It is better to assume a user is not in a GUI with Core, IMO.

Providing just the link in an easy to read, select, copy and with the least risk of line-wrapping is the best bet if we are to provide it in the banner at all, IMO. Might not even need an explanation as the URL is decently self-explanatory:

Copyright (c) Microsoft Corporation. All rights reserved.

https://aka.ms/pscore6-docs
Type 'Help' to get help.

Bash doesn't have any enforced banners from bash itself, I don't think. If we follow bash style, it will show nothing unless the user/system admin deems it necessary. So I'm not sure what you mean by bash-style. Can you provide an example? (and lets not go by python's REPL, that thing is painful)

Sorry, skip my comment about Bash banner - I means whole original Issue in wrong context.

Why upcase the H i.e. why not Type 'help' to get help.? That feels more *nixy. :-)

Also, someone should consider updating the Get-Help topic because when you execute help (or man on Windows) and get this topic that talks all about Get-Help, it can be a bit confusing. I think the LONG DESCRIPTION should mention the fact that:

help exists as a function wrapper to the Get-Help command that pages the output to the console. On Windows, man is an alias for the help function. On Windows, the default pager is more.com. On other systems, it is less. You can select a different pager utility with the $env:PAGER environment variable. For example, if you have less on your Windows system you
can set $env:PAGER to the path to less and the help function will use less to page Get-Help output.

I agree that we can simply say:

Type `help` to get help.

I would prefer this link to be in the help text since the link isn't clickable